Rotary steam-engine



DUNKERLEY. Rotary Steam Engine.

No. 236,701. Patented Jan. 18, I881.

N. PETERS. FNOTO-LITHOGRAPHER, WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

WILLIAM H. DUNKERLEY, OF PATERSON, NEW JERSEY.

ROTARY STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 236,701, dated January 18, 1881.

Application filed October 22, 1879.

To all whom it may concern:

Be it known that I, WILLIAM H. DUNKER- LEY, of the city of Paterson, county of Passaic, and State of New Jersey, have invented a new and useful Improvement in Rotary team-Engines, of which the following is a specification.

The object of my invention is to produce a rotary steam-engine which is simple in its construction, powerful in operation, and requiring but little space.

My invention consists of a rotary steam-engine of novel construction and arrangement of parts, which I will now roceed to explain, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in which Figure 1 is a sectional view of my newlyinvented engine. Fig. 2 is an end view, in which the cylinder-head is removed, showing the piston, following-valves, 850. Fig. 3 is an end view, having the steam-chest cover removed, showing the inside of the steam-chest and rotary valve. Fig. 4 shows the piston in an end and side view. Fig. 5 is an end view of the followers, and Fig. 6 is a cut view of the rotary valve and its collar or sleeve.

E denotes the shaft, which is journaled in suitable hearings, as shown in Fig. 1. ()n the shaft E, in the cylinder A, there is arranged a cam-shaped piston, l), the piston being provided with packing-joints i and l, which are actuated by springs k k k, the piston being adapted to rotate in the cylinder A, and the followingjointsi and l being adapted to follow the piston l) and act to prevent the escape of steam from behind the piston D, reserving thereby the full head of steam to act on the piston. To impinge against the piston D there are arranged two followers, 6 e. The

followers are provided with packing-joints g and m, operated by springs h and a.

In the steam-chest B there is arranged a rotary valve, 0. The valve 0 works in a collar or sleeve, 1). The sleeve 1) is secured to the shaft E by means of a set-screw. The valve G and collar 0 are caused to act in concert by reason of their being connected by a key, 0 The valve 0 rotates against the side of the steam-chest B, and acts to make a perfect bed for itself thereby.

The operation of my newlyinvented engine is as follows: The steam enters the steamchest B through the pipe a. The valve (J conimunicates the steam from the steam-chest B to the cylinder A through the seam-ports (1 The steam strikes the valves 6 c, which inipiuge against the piston D, which is secured to the shaft E in the cylinder A: Thus motion is communicated to the piston, the piston being provided with packing ioints't' l, which are actuated by springs 70 k k to prevent the escape of steam from behind the piston. Thus the whole head of steam acts on the flat side of the piston I), which augments its power. The steam passes out of the exhaust-ports c to the exhaust-pipe b.

The collar or sleeve 1), to which the valve 0 is secured, may be fastened to the shaft E by any of the known methods in use for that purpose.

The valve O, which rotates against the Wall of the steam-chest B, serves to make a perfect bed for itself.

I am aware that the followers 6 c, with their joints g and springs h, are old, and being old I do not claim them.

That I claim, and desire to secure by Letters Patent, is

The combination of the rotary valve 0, the collar or sleeve 1), key b shaft E, ports d and 0, piston D, steam-chest B, cylinder A, and pipes at b, all arranged as shown, and for the purpose set forth.

WILLIAM H. DUNKERLEY.

Witnesses:

J AMES DUNKERLEY, JOHN INGLIS. 

